McDonald's Studies Cow Burps to Cut Down on Methane Emissions

Fast Company -- McDonald's isn't known for the sustainable qualities of its hamburgers, and for good reason--a burger-shaped mashup of various beef sources isn't all that appetizing to think about. But while MickeyD's probably won't start using meat from grass-fed, organic cows anytime soon, the fast food chain is making strides in one important area: cow burps.